CN106756231A - A kind of nanocrystalline titanium alloy fastener preparation method - Google Patents
A kind of nanocrystalline titanium alloy fastener preparation method Download PDFInfo
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- CN106756231A CN106756231A CN201510821531.1A CN201510821531A CN106756231A CN 106756231 A CN106756231 A CN 106756231A CN 201510821531 A CN201510821531 A CN 201510821531A CN 106756231 A CN106756231 A CN 106756231A
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Abstract
A kind of nanocrystalline titanium alloy fastener preparation method, is related to a kind of powder metallurgy preparation technique of sleeve part.The sleeve part is made up of titanium alloy material, and the content of titanium is 80.5wt%~99.5wt% in the titanium alloy material, one or more combination in balance of Al, Fe, V, Sn, Mo, Zr, Si.The nanocrystalline titanium alloy sleeve part is manufactured using the method for powder metallurgy, titanium and other metallic element powder are added into mould after high-energy ball milling, titanium alloy sleeve part is prepared by HIP sintering, the size requirement finally according to titanium alloy sleeve part is finished.Stock utilization of the present invention is high, and composition is uniform, it is easy to industrialization production.Nanocrystalline titanium alloy sleeve part prepared by the present invention can meet the specific demand in the fields such as Aeronautics and Astronautics, navigation, weapons.
Description
Technical field
It is suitable to nanocrystalline titanium alloy fastener of special demand and preparation method thereof the present invention relates to a kind of.
Background technology
With the development in the fields such as Aeronautics and Astronautics, weapons, naval vessel, chemical industry, the energy, on the one hand to including
Sleeve part increases in the demand of interior instrument, on the other hand it is also proposed harsher performance requirement,
It is such as corrosion-resistant, light, without magnetic, superpower durable.Although titanium alloy is because its intensity is high, corrosion resistance is good, resistance to
Hot high the features such as and be widely used in every field, but, due to titanium alloy special physics and mechanical property
Can, high with intensity, deformability is poor, and cold work hardening is serious, and resilience is strong, easy to crack, easy sticking to mould etc.
Defect.Current titanium alloy sleeve uses hot upsetting processing method mostly, there is poor product quality, and material unit consumption is high,
Labour intensity is big, low production efficiency, and percent defective is high and the shortcomings of high cost, it is impossible to meet Aeronautics and Astronautics etc.
The application demand of special dimension.
High-energy ball milling+heat and other static pressuring processes can be solved as a kind of effective ways for preparing and consolidating difficult-to-machine material
The shaping problem of certainly complex-shaped parts, and disposable shaping rate is high, following process is few, stock utilization
Height, composition is uniform, it is easy to industrialization production, has prominent advantage in process technology.So, high energy
Ball milling combination heat and other static pressuring processes are applied to the preparation of titanium alloy parts, can obtain high-compactness, fine grain group
The Ti alloy with high performance sleeve type component knitted.
The content of the invention
To solve the shaping problem of existing titanium alloy sleeve type component, the invention provides a kind of resistance to Special Ring
Titanium alloy sleeve type component and its manufacture method that border uses.
The titanium alloy fastener of resistance to environment of the invention is made up of a kind of titanium alloy material, the titanium alloy material
The content of middle titanium is 80.5wt%~99.5wt%, in balance of Al, Fe, V, Sn, Mo, Zr, Si one
Plant or multiple combination.
When the surplus is by various combination in Al, Fe, V, Sn, Mo, Zr, Si, wherein respectively
The ratio for planting composition is any ratio.
It is preferred that, the titanium alloy material be Ti-6Al-4V, Ti-4Al-2V-2Mo-2Fe, Ti-2Al-4Mo-4Zr,
Any one in Ti-6Al-0.2Si-2Sn-3Mo-4Zr, Ti-6Mo-4Fe-1.5V-2Al or Ti-6Al-Fe-V.
It is preferred that, nanocrystalline titanium alloy fastener is nanocrystalline titanium alloy sleeve.
The preparation method of the titanium alloy fastener of resistance to environment of the invention, is in particular titanium alloy sleeve type zero
The manufacture method of part, detailed process is：
Compounding process：By TiH2Powder and other elemental metalpowders carry out mixed powder, wherein TiH2Powder and its
The particle diameter of its elemental metalpowder be 10 μm~150 μm, described other elemental metalpowders be Al, Fe,
The mixture of a kind of metal dust or various metals powder in V, Sn, Mo, Zr, Si；Wherein titanium contains
It is 80.5wt%~99.5wt% to measure；The mixed powder time continues 1 hour~10 hours, is well mixed all powder；
High-energy ball milling：Well mixed powder is put into high energy ball mill, titanium is closed using high energy ball mill
Bronze material is directly broken into the titanium alloy powder with nanostructured：Use purity for more than 99.99% Ar
Used as protective atmosphere, the ratio of grinding media to material of high-energy ball milling is 5 to gas:1~20:1, the rotating speed of high-energy ball milling is 100~300
Rev/min, the time of high-energy ball milling is 20~60 hours, the crystalline substance of nanocrystalline titanium alloy powder obtained in high-energy ball milling
Particle size is 50~100nm.
High temperature insostatic pressing (HIP)：Nanocrystalline titanium alloy powder is put into 304 stainless steel capsules, is used：Temperature
850 DEG C -950 DEG C, pressure 100MPa~150MPa, heat-insulation pressure keeping 1~3 hour obtains relative density 99.8%,
Sleeve type high temperature insostatic pressing (HIP) part of the scale error less than 1%.
Finishing procedure：The powder blank that high temperature insostatic pressing (HIP) is completed is removed with method for turning, blank is finished,
Acquisition meets the titanium alloy sleeve of dimension precision requirement.
It is preferred that, nanocrystalline titanium alloy fastener described in above-mentioned preparation method is nanocrystalline titanium alloy sleeve.
Beneficial effects of the present invention are as follows：
1st, the present invention realizes plastic deformation, consolidation, the recrystallization, titanium alloy sleeve member of titanium alloy powder particle
Relative density up to 99.8%, scale error is less than 1%.
2nd, the present invention realizes the process of refinement of titanium alloy, and there is the nanocrystalline titanium alloy sleeve of preparation height to cause
Close, fine grained texture, the features such as its comprehensive mechanical property is excellent, resistance to corrosion is strong, is suitable for particular surroundings
Sleeve parts use.
Brief description of the drawings
Nanocrystalline titanium alloy sleeve SEM figures prepared by Fig. 1 present invention
Specific embodiment
Embodiment 1
Nanocrystalline titanium alloy sleeve described in the present embodiment is made up of a kind of titanium alloy material, the titanium alloy
The content of titanium is 80.5wt%~99.5wt% in material, in balance of Al, Fe, V, Sn, Mo, Zr, Si
One or more combination.
When the surplus is by various combination in Al, Fe, V, Sn, Mo, Zr, Si, wherein respectively
The ratio for planting composition is any ratio.
The ratio of various composition can be in the titanium alloy material：Ti-6Al-4V、Ti-4Al-2V-2Mo-2Fe、
Ti-2Al-4Mo-4Zr, Ti-6Al-0.2Si-2Sn-3Mo-4Zr, Ti-6Mo-4Fe-1.5V-2Al or
Ti-6Al-Fe-V。
Embodiment 2
Described in the present embodiment be the nanocrystalline titanium alloy sleeve of resistance to environment described in embodiment 1 preparation method,
Its detailed process is：
Compounding process：By TiH2Powder and other elemental metalpowders carry out mixed powder, wherein TiH2Powder and its
The particle diameter of its elemental metalpowder be 10 μm~150 μm, described other elemental metalpowders be Al, Fe,
The mixture of a kind of metal dust or various metals powder in V, Sn, Mo, Zr, Si；Wherein titanium contains
It is 80.5wt%~99.5wt% to measure；The mixed powder time continues 1 hour~10 hours, is well mixed all powder；
High-energy ball milling：Well mixed powder is put into high energy ball mill, titanium is closed using high energy ball mill
Bronze material is directly broken into the titanium alloy powder with nanostructured：Use purity for more than 99.99% Ar
Used as protective atmosphere, the ratio of grinding media to material of high-energy ball milling is 5 to gas:1~20:1, the rotating speed of high-energy ball milling is 100~300
Rev/min, the time of high-energy ball milling is 10~60 hours, the crystalline substance of nanocrystalline titanium alloy powder obtained in high-energy ball milling
Particle size is 50~100nm.
High temperature insostatic pressing (HIP)：Nanocrystalline titanium alloy powder is put into 304 stainless steel capsules, is used：Temperature
850 DEG C -950 DEG C, pressure 100MPa~150MPa, heat-insulation pressure keeping 1~3 hour obtains relative density 99.8%,
Sleeve type high temperature insostatic pressing (HIP) part of the scale error less than 1%.
Finishing procedure：The powder blank that high temperature insostatic pressing (HIP) is completed is removed with method for turning, blank is finished,
Acquisition meets the titanium alloy sleeve of dimension precision requirement.
The preparation method of the nanocrystalline titanium alloy sleeve of resistance to environment described in the present embodiment is a kind of side of powder metallurgy
Method.
TiH in the present embodiment2The optimum range of the diameter of powder and other elemental metalpowders be 20 μm~
60μm。
In high-energy ball milling operation, optimal ratio of grinding media to material is 20:1, optimal Ball-milling Time is 30 hours.
In high temperature insostatic pressing (HIP) operation, the optimum range of high temperature insostatic pressing (HIP) is optimal heat etc. between 850 DEG C~900 DEG C
The static pressure time is 1~2 hour.
Embodiment 3
The present embodiment is the more specific embodiment of embodiment 2 one.
The raw material used in the present embodiment are：Ti-6Mo-4Fe-1.5V-2Al, specific embodiment is：
Compounding process：By TiH2Powder and other elemental metalpowders carry out mixed powder, wherein TiH2Powder and its
The particle diameter of its elemental metalpowder is 50~70 μm, and the mixed powder time continues 15 hours, mixes all powder
Close uniform；
High-energy ball milling：Well mixed powder is put into high energy ball mill, titanium is closed using high energy ball mill
Bronze material is directly broken into the titanium alloy powder with nanostructured：Use purity for 99.99% Ar gas conducts
Protective atmosphere, the ratio of grinding media to material of high-energy ball milling is 10:1, the rotating speed of high-energy ball milling is 150 revs/min, high-energy ball milling
Time be 24 hours, the crystallite dimension of nanocrystalline titanium alloy powder obtained in high-energy ball milling be 50~80nm.
High temperature insostatic pressing (HIP)：Nanocrystalline titanium alloy powder is put into 304 stainless steel capsules, is used：900 DEG C of temperature,
Pressure 150MPa, heat-insulation pressure keeping 2 hours obtains relative density 99.8%, the sleeve of scale error 0.95%
Class high temperature insostatic pressing (HIP) part.
Finishing procedure：The powder blank that high temperature insostatic pressing (HIP) is completed is removed with method for turning, blank is finished,
Acquisition meets the titanium alloy sleeve of dimension precision requirement.
Claims (5)
1. a kind of nanocrystalline titanium alloy fastener, it is characterised in that it is made up of a kind of titanium alloy material,
In the titanium alloy material content of titanium be 80.5wt%~99.5wt%, balance of Al, Fe, V, Sn, Mo,
One or more combination in Zr, Si.
2. nanocrystalline titanium alloy fastener according to claim 1, it is characterised in that the titanium alloy
Material be Ti-6Al-4V, Ti-4Al-2V-2Mo-2Fe, Ti-2Al-4Mo-4Zr,
Any one in Ti-6Al-0.2Si-2Sn-3Mo-4Zr, Ti-6Mo-4Fe-1.5V-2Al or Ti-6Al-Fe-V.
3. nanocrystalline titanium alloy fastener according to claim 1 and 2, it is characterised in that the nanometer
Brilliant titanium alloy fastener is nanocrystalline titanium alloy sleeve.
4. the preparation method of the nanocrystalline titanium alloy fastener described in claim 1, its detailed process is：
Compounding process：By TiH2Powder and other elemental metalpowders carry out mixed powder, wherein TiH2Powder and its
The particle diameter of its elemental metalpowder be 10 μm~150 μm, described other elemental metalpowders be Al, Fe,
The mixture of a kind of metal dust or various metals powder in V, Sn, Mo, Zr, Si；Wherein titanium contains
It is 80.5wt%~99.5wt% to measure；The mixed powder time continues 1 hour~10 hours, is well mixed all powder；
High-energy ball milling：Well mixed powder is put into high energy ball mill, titanium is closed using high energy ball mill
Bronze material is directly broken into the titanium alloy powder with nanostructured：Use purity for more than 99.99% Ar
Used as protective atmosphere, the ratio of grinding media to material of high-energy ball milling is 5 to gas:1~20:1, the rotating speed of high-energy ball milling is 100~300
Rev/min, the time of high-energy ball milling is 20~60 hours, the crystalline substance of nanocrystalline titanium alloy powder obtained in high-energy ball milling
Particle size is 50~100nm；
High temperature insostatic pressing (HIP)：Nanocrystalline titanium alloy powder is put into 304 stainless steel capsules, is used：Temperature
850 DEG C -950 DEG C, pressure 100MPa~150MPa, heat-insulation pressure keeping 1~3 hour obtains relative density 99.8%,
Sleeve type high temperature insostatic pressing (HIP) part of the scale error less than 1%；
Finishing procedure：The powder blank that high temperature insostatic pressing (HIP) is completed is removed with method for turning, blank is finished,
Acquisition meets the titanium alloy sleeve of dimension precision requirement.
5. nanocrystalline titanium alloy fastener according to claim 4, it is characterised in that the nanocrystalline titanium
Alloy fasteners are nanocrystalline titanium alloy sleeve.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109266906A (en) * | 2018-10-31 | 2019-01-25 | 北京金宇顺达科技股份有限公司 | A kind of beta titanium alloy material and its preparation method and application |
| CN110343905A (en) * | 2019-08-07 | 2019-10-18 | 攀枝花市天民钛业有限公司 | High-temperature titanium alloy and preparation method thereof |
| CN113714498A (en) * | 2021-08-30 | 2021-11-30 | 苏州鹏贤新材料科技有限公司 | Production process of powder metallurgy high-mechanical-property titanium alloy fastener |
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| CN102510908A (en) * | 2009-09-25 | 2012-06-20 | 日本发条株式会社 | Nanocrystal titanium alloy and production method for same |
| CN102703756A (en) * | 2012-05-08 | 2012-10-03 | 华南理工大学 | Preparation method of double-scale crystalline grain Ti-6Al-4V material |
| US20140341775A1 (en) * | 2013-05-20 | 2014-11-20 | Korea Institute Of Machinery & Materials | Ti-Al-BASED ALLOY INGOT HAVING DUCTILITY AT ROOM TEMPERATURE |
| CN104944380A (en) * | 2015-07-09 | 2015-09-30 | 安徽淮化股份有限公司 | Acid dosing device of hydrogen peroxide production system |
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2015
- 2015-11-24 CN CN201510821531.1A patent/CN106756231B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102510908A (en) * | 2009-09-25 | 2012-06-20 | 日本发条株式会社 | Nanocrystal titanium alloy and production method for same |
| CN102703756A (en) * | 2012-05-08 | 2012-10-03 | 华南理工大学 | Preparation method of double-scale crystalline grain Ti-6Al-4V material |
| US20140341775A1 (en) * | 2013-05-20 | 2014-11-20 | Korea Institute Of Machinery & Materials | Ti-Al-BASED ALLOY INGOT HAVING DUCTILITY AT ROOM TEMPERATURE |
| CN104944380A (en) * | 2015-07-09 | 2015-09-30 | 安徽淮化股份有限公司 | Acid dosing device of hydrogen peroxide production system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109266906A (en) * | 2018-10-31 | 2019-01-25 | 北京金宇顺达科技股份有限公司 | A kind of beta titanium alloy material and its preparation method and application |
| CN110343905A (en) * | 2019-08-07 | 2019-10-18 | 攀枝花市天民钛业有限公司 | High-temperature titanium alloy and preparation method thereof |
| CN113714498A (en) * | 2021-08-30 | 2021-11-30 | 苏州鹏贤新材料科技有限公司 | Production process of powder metallurgy high-mechanical-property titanium alloy fastener |
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